FMF 044033 PowerBomb Header Pipe — Yamaha YFZ450 / YZ450F / WR450F (2004-2015) Performance

FMF 044033 — PowerBomb Performance Header Pipe for Yamaha YFZ450, YZ450F & WR450F — Patented "Bomb" Technology for Massive Power Gains and Improved Sound Management

Unlock the hidden performance potential of your Yamaha YFZ450, YZ450F, or WR450F with the FMF 044033 PowerBomb Header. This is not just a standard replacement pipe; it is a precision-engineered performance upgrade that leverages FMF's patented "Bomb" technology. By strategically placing an expansion chamber module at the initial stage of the header pipe, the PowerBomb facilitates the expansion and contraction of exhaust sonics, which dramatically increases exhaust flow and engine scavenging efficiency. Riders can expect a significant boost in performance—with horsepower gains of up to 10%—making this an essential upgrade for any serious racer or off-road enthusiast.

Beyond the impressive power increases, the PowerBomb header acts as a highly efficient "pre-muffler." The chamber design helps manage sound pressure, effectively lowering your machine's overall decibel output without sacrificing flow or top-end performance. Constructed from high-strength, premium stainless steel, this header pipe is engineered to survive the extreme heat cycles, high vibration, and rough trail conditions synonymous with competitive ATV and off-road motorcycle use. Whether you are attacking a motocross track or exploring remote terrain, the PowerBomb provides the reliable, usable power you need to perform at your best.

• Patented PowerBomb Module: The iconic "Bomb" chamber at the initial stage of the header increases flow and boosts performance by up to 10% in horsepower.
• Advanced Sonic Management: Acts as a "pre-muffler" by expanding and contracting exhaust sonics, effectively lowering overall decibel output while maintaining high flow.
• High-Flow Engineering: The expansion chamber design optimizes the scavenging effect, resulting in improved throttle response and acceleration throughout the power curve.
• Durable Stainless Steel: Manufactured from high-grade stainless steel to resist corrosion, thermal fatigue, and the rigors of competitive racing.
• Broad Compatibility: Precision-engineered for a seamless fit on Yamaha YFZ450 (2004-2009, 2012-2015), YZ450F (2004-2006), and WR450F (2004-2006).
• Proven FMF Heritage: Engineered and tested by the world’s leading exhaust manufacturer to provide reliable, race-proven performance for your Yamaha build.

Moto-House MX Pro Tip:

The PowerBomb header is the ultimate foundation for your exhaust system upgrade. Installation Tip: Always use a fresh exhaust port gasket during installation to ensure an airtight seal and prevent exhaust leaks that can cause popping on deceleration. Tuning Advice: Because this header improves volumetric efficiency, we highly recommend pairing it with a fuel tuner or carburetor jet kit upgrade to balance your air-fuel ratio and ensure your engine delivers consistent, reliable power.

Technical Specs	Construction	Vehicle Compatibility
PowerBomb Tech	High-Grade Stainless Steel	Yamaha YFZ450
Up to 10% Power Gain	Pre-Muffler Sound Management	Yamaha YZ450F
Weight: 3.25 lbs	Direct Replacement Header	Yamaha WR450F

FAQ Questions

Q) Will this fit my factory muffler?
A) Yes, this header is designed as a direct replacement for your factory head pipe and is compatible with both stock and FMF performance mufflers for enhanced gains.

Q) Is this pipe lighter than the stock factory header?
A) Yes, the high-quality stainless steel construction offers a superior strength-to-weight ratio, providing a more durable and lighter alternative to heavy, restrictive stock pipes.

Moto-House MX – Choice of Champions – is located in Clermont/Montverde, FL. We are the best shop in Central Florida with lightning-fast shipping.